Delete dead code for CurrentlyOpenTabs

chrome/android/java_sources.gni

 # Copyright 2016 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 chrome_java_sources = [
   "java/src/com/google/android/apps/chrome/appwidget/bookmarks/BookmarkThumbnailWidgetProvider.java",
   "java/src/org/chromium/chrome/browser/ActivityTabTaskDescriptionHelper.java",
   "java/src/org/chromium/chrome/browser/ActivityTaskDescriptionIconGenerator.java",
   "java/src/org/chromium/chrome/browser/AfterStartupTaskUtils.java",
   "java/src/org/chromium/chrome/browser/ApplicationInitialization.java",
@@ skipping 536 matching lines @@
   "java/src/org/chromium/chrome/browser/notifications/NotificationConstants.java",
   "java/src/org/chromium/chrome/browser/notifications/NotificationManagerProxy.java",
   "java/src/org/chromium/chrome/browser/notifications/NotificationManagerProxyImpl.java",
   "java/src/org/chromium/chrome/browser/notifications/NotificationPlatformBridge.java",
   "java/src/org/chromium/chrome/browser/notifications/NotificationService.java",
   "java/src/org/chromium/chrome/browser/notifications/NotificationSystemStatusUtil.java",
   "java/src/org/chromium/chrome/browser/notifications/StandardNotificationBuilder.java",
   "java/src/org/chromium/chrome/browser/notifications/WebApkNotificationClient.java",
   "java/src/org/chromium/chrome/browser/ntp/ContentSuggestionsNotificationHelper.java",
   "java/src/org/chromium/chrome/browser/ntp/ContextMenuManager.java",
-  "java/src/org/chromium/chrome/browser/ntp/CurrentlyOpenTab.java",
   "java/src/org/chromium/chrome/browser/ntp/DisplayStyleObserver.java",
   "java/src/org/chromium/chrome/browser/ntp/ForeignSessionHelper.java",
   "java/src/org/chromium/chrome/browser/ntp/IncognitoNewTabPage.java",
   "java/src/org/chromium/chrome/browser/ntp/IncognitoNewTabPageView.java",
   "java/src/org/chromium/chrome/browser/ntp/LogoBridge.java",
   "java/src/org/chromium/chrome/browser/ntp/LogoView.java",
   "java/src/org/chromium/chrome/browser/ntp/MostVisitedItem.java",
   "java/src/org/chromium/chrome/browser/ntp/MostVisitedItemView.java",
   "java/src/org/chromium/chrome/browser/ntp/MostVisitedLayout.java",
   "java/src/org/chromium/chrome/browser/ntp/NativePageAssassin.java",
@@ skipping 979 matching lines @@
   "sync_shell/javatests/src/org/chromium/chrome/browser/sync/SyncTestBase.java",
   "sync_shell/javatests/src/org/chromium/chrome/browser/sync/TypedUrlsTest.java",
   "sync_shell/javatests/src/org/chromium/chrome/browser/sync/ui/PassphraseTypeDialogFragmentTest.java",
 ]
 
 # Only used for testing, should not be shipped to end users.
 if (!is_official_build) {
   chrome_java_sources += [ "java/src/org/chromium/chrome/browser/offlinepages/evaluation/OfflinePageEvaluationBridge.java" ]
   chrome_test_java_sources += [ "javatests/src/org/chromium/chrome/browser/offlinepages/OfflinePageSavePageLaterEvaluationTest.java" ]
 }